Revert commit 25798c15 (UseSWIG: use $<SOURCE_PROPERTY> genex,
2026-06-05).
Moving source file properties evaluation from configuration
to generation time prevents the possibility to have the same source file,
in one directory, in different targets with different settings.
Revert to the previous implementation not using $<SOURCE_PROPERTY>
generator expression.
Fixes: #28193
To enable a more flexible uasage of source properties (like setting
these properties after `swig_add_library()` call), rely now on
$<SOURCE_PROPERTY> generator expression.
Introduce a mechanism (via the private and undocumented `ISSUE_WARNING`
option to the `cmake_policy` command) to allow built-in modules to issue
policy warnings. Update modules to use this.
This allows modules to issue policy warnings with the `CMD_POLICY`
diagnostic type, which is consistent with internally issued diagnostics.
This also tends to simplify the logic for issuing such warnings in much
the way the helpers introduced in the previous commit did for the C++
code.
Covers almost all blocks containing actual code, except:
* Parsed-literal blocks can't be highlighted, including many command
summaries and substitution-heavy docs like find_... commands.
This is a Sphinx limitation.
* Code with errors, like CMP0049, DEPLOYMENT_ADDITIONAL_FILES,
DEPLOYMENT_REMOTE_DIRECTORY, @PACKAGE_INIT@ substitution in the
tutorial, bracket arguments/comments in cmake-language.7 and
cmake-developer.7.
* FindQt4 module, which needs reformatting.
* Add section headings
* Add TOC (HTML only)
* Move `swig_link_libraries()` to "Deprecated commands"
section at end of docs, document as deprecated in favor of
`target_link_libraries()` in all cases.
When testing on macOS, the command `swig_add_library("mytarget")`
creates a library `libmytarget.so` instead of `libmytarget.dylib`.
Subsequently, the library is not found by `dotnet` and the
swig-generated `DllImport` statements.
Fixes: #23967
When `Visual Studio` and `Xcode` generators are used, directory for depfile
is not implicitely created by CMake when OUTFILE_DIR option is used.
Fixes: #22932
Since commit 89b01b04fa (UseSWIG: use swig tool to generate
dependencies, 2021-01-12, v3.20.0-rc1~120^2) we use a tool-provided
depfile to extract dependencies under the Ninja generator. Enable
`CMP0116` to ensure depfile paths are translated to match what the Ninja
generator writes to the build manfiest.
Fixes: #22029
Backport commit de7f0aa6c0 (UseSWIG: avoid spurious policy warnings,
2021-02-11) to the 3.20 release branch. Projects need to be able to
control policies.
Issue: #22029
add_custom_command() supports option DEPFILE when generator is
Makefiles or Ninja. And swig tool is able to generate a dependencies
file which is compatible with DEPFILE option.
Manage alternate library name by passing -interface <library_name>
for python language or -dllimport <library_name> for CSharp language
to the SWIG compiler.
Fixes: #18771
This command is intended for modules that issue policy warnings so
they can get the warning string from CMake in a uniform manner,
rather than duplicating the string. Several modules been updated
to include an example of the usage of this new command.
Marc Chevrier